Module disasm 

RV32IMA disassembler — objdump-compatible output.

Converts a 32-bit instruction word into a human-readable string using ABI register names and common pseudo-instructions. When a SymbolTable is provided, branch and jump targets are annotated with symbol names.

Output format

The format matches GNU objdump (-M no-aliases disabled, i.e. pseudos on):

80000014  510010ef  jal     ra, <main>
80001524  ff010113  addi    sp, sp, -16
80001528  00112623  sw      ra, 12(sp)

Pseudo-instructions

The following common pseudos are emitted when the encoding matches:

Pseudo	Canonical form
nop	addi zero, zero, 0
mv rd, rs	addi rd, rs, 0
li rd, imm	addi rd, zero, imm
not rd, rs	xori rd, rs, -1
neg rd, rs	sub rd, zero, rs
snez rd, rs	sltu rd, zero, rs
ret	jalr zero, 0(ra)
jr rs	jalr zero, 0(rs)
j offset	jal zero, offset
beqz/bnez/bltz/bgez	branch with zero as one operand

Static disassembly

disasm_elf disassembles an entire ELF image segment by segment, with symbol labels printed before each function — equivalent to objdump -d.

Functions

disasm_elf

Disassemble an entire ELF image, segment by segment, like objdump -d.

disassemble

Disassemble one RV32IMA instruction into an objdump-compatible string.